Banks, J. H. (1961). Elements of mathematics (2a. ed.). Allyn and Bacon.
Cita Chicago (17th ed.)Banks, J. Houston. Elements of Mathematics. 2a. ed. Boston: Allyn and Bacon, 1961.
Cita MLA (9th ed.)Banks, J. Houston. Elements of Mathematics. 2a. ed. Allyn and Bacon, 1961.
Atenció: Aquestes cites poden no estar 100% correctes.